KR102328375B1 - Air blower with damper - Google Patents

Abstract

The present invention relates to a damper-integrated air blower comprising a housing having an intake port and a discharge port formed therein, an air blower fan installed inside the housing and rotated by a fan motor, and a damper installed in the discharge port and rotated by a damper motor to open and close the discharge port. The damper includes a damper shaft installed with a gap inside a shaft groove recessed in a ceiling of the discharge port, a hard damper plate connected to the damper shaft to rotate, a soft damper cover coated on the damper plate, and a soft gap blocking wing protruding from an upper front surface of the damper cover. When the damper rotates, the gap blocking wing rotates along the gap in conjunction with the damper, and when the damper closes the discharge port, the gap blocking wing comes in contact with a front end of the inner circumferential surface of the shaft groove, thereby blocking a backflow intruding through the gap.

Description

Damper-integrated blower {Air blower with damper}

The present invention relates to a damper-integrated blower, and more particularly, to a damper-integrated blower capable of effectively blocking backflow and minimizing damage to a damper and noise generation without impeding the blown air flow.

In general, a ventilation device is installed in a building to comfortably ventilate the enclosed indoor air by discharging indoor polluted air to the outside and introducing fresh outdoor air into the room.

However, in the conventional ventilation device, a blower for ventilation and a damper device for blocking backflow when not in operation are separately configured. As the manufacturing cost increases and the volume of the ventilation device increases, it is manufactured in a compact and slippery type. There was a problem that was difficult to do.

Accordingly, the present applicant has proposed a damper-integrated blower (Registered Utility Model No. 20-0485101) configured to open and close the outlet by installing a damper at the outlet of the blower to solve this problem.

The previously proposed damper-integrated blower has a damper integrally formed at the discharge port to effectively block reverse flow. In particular, a counterflow that can be introduced into the gap between the damper shaft and the shaft groove for damper rotation through the gap breaker formed in the damper. It has the advantage of excellent backflow blocking efficiency as it can completely block even

However, in the damper-integrated blower, the gap breaker is formed protruding from the rear of the damper, and when the outlet is closed, the gap breaker is in close contact with the ceiling of the outlet to block the gap. It has been found that the damper is damaged and noise is caused by the vibration of the damper due to continuous friction with the air, while the blocking blade is exposed to the air flow path and obstructs the air flow.

Accordingly, the present applicant has proposed an improved integrated damper blower that can solve the above problems of the previously proposed integrated damper blower while effectively blocking the reverse flow flowing into the gap.

Registered Utility Model No. 20-0485101: Damper-integrated blower

The present invention is proposed in order to solve the above-mentioned problems in the prior art, and an object of the present invention is to block up to a reverse flow leaking through a gap, but to improve the blowing efficiency by not inhibiting the air flow, and to reduce friction when the damper is rotated and blown. An object of the present invention is to provide a damper-integrated blower capable of minimizing damage to the damper and noise generation.

As a problem solving means of the present invention for achieving the above object,

A damper-integrated blower comprising: a housing having an intake port and a discharge port; The damper may include a damper shaft installed with a gap inside the shaft groove recessed in the ceiling of the discharge port, a rigid damper plate connected to the damper shaft and rotating, a soft damper cover coated on the damper plate, and the damper It includes a soft gap breaker blade protruding from the upper front surface of the cover, a stepped portion is formed protruding from the front end of the inner peripheral surface of the shaft groove, and the gap breaker blade is rotated in conjunction with the damper when the damper is rotated, spaced apart from the inner peripheral surface of the shaft groove A damper-integrated blower is disclosed which rotates along the gap in a non-contact state and selectively adheres to the stepped portion only when the discharge port is closed by the damper to block the reverse flow flowing into the gap.

delete

In addition, a gap blocking piece protruding to be close to the damper shaft may be formed at the rear end of the inner circumferential surface of the shaft groove.

According to the damper-integrated blower according to the present invention,

Through the gap breaker formed in the damper, even the backflow that can flow into the gap between the damper shaft and the shaft groove can be blocked, which has the advantage of maximizing the backflow blocking efficiency.

In addition, the gap breaker only adheres to the inner circumferential surface of the shaft groove only when the discharge port is closed, and does not cause any interference or friction during the rotation process for opening and closing the discharge port. There are advantages to avoiding it.

In addition, since the gap breaker is not exposed to the outside of the shaft groove and is located only inside the shaft groove, there is an advantage in that it is possible to minimize the vibration or noise-induced phenomenon as in the prior art without disturbing the air flow during blowing.

In addition, it is added that, in addition to the effects specifically specified as described above, the specific effects that can be easily derived and expected from the characteristic configuration of the present invention may also be included in the effects of the present invention.

1 is a view illustrating an overall configuration of a damper-integrated blower according to the present invention;
2 is a view illustrating an inside and a damper part of the blower according to the present invention,
3 is an enlarged view of the part “A” of FIG. 2 when the discharge port is closed;
FIG. 4 is an enlarged view illustrating part “A” of FIG. 2 when the discharge port is opened.

Hereinafter, a preferred embodiment of the damper-integrated blower according to the present invention will be described in detail with reference to the accompanying drawings.

This embodiment is provided to more clearly explain the present invention to those with average knowledge in the art, and the shape, size, number, spacing between elements, etc. It may be reduced or exaggerated for emphasis, and it is not limited to the matters illustrated in the drawings unless specifically limited.

In addition, in the description of the embodiment, if it is described that a component is “provided”, “formed”, “installed”, “coupled”, “fixed”, or “connected” to another component, , may be provided, formed, installed, coupled, fixed, or connected directly to the other components, but it will be understood that other components may exist in the middle.

In addition, terms indicating directions such as front, rear, left, right, top, bottom, etc. are used only to describe the directions shown and observed in the drawings, and if the directions shown and observed are changed, these terms may also vary. It should be understood that there is

In addition, when it is determined that the technical features of the present invention may be unnecessarily obscured as it is already apparent to those skilled in the art, such as a known function or a known configuration related in principle in describing the embodiment, the detailed description thereof A description will be omitted.

1 illustrates a damper-integrated blower according to an embodiment of the present invention.

As illustrated in FIG. 1 , the damper-integrated blower (hereinafter, abbreviated as “blower”) according to an embodiment of the present invention includes a housing 10, a fan motor 20, and a blowing fan 30. and a damper motor 40 and a damper 50 may be included.

An intake port 11 through which air is sucked into the housing 10 and an outlet port 12 through which the suctioned air is discharged to the outside may be formed, respectively.

The fan motor 20 is installed in the housing 10 on the other side of the intake port 11 , and is driven when power is applied to provide rotational power to the blower fan 30 . As the fan motor 20 , a brushless DC motor (BLDC) may be used.

The blower fan 30 is coupled to the fan motor 20 through a rotation shaft 31, is installed in the inner housing 10 of the intake port 11, and is rotated by the rotational power of the fan motor 20 to the intake port ( 11) may perform a blowing function of sucking air and discharging it to the outlet 12 .

The damper motor 40 is installed on one side of the outside of the discharge port 12, and can provide a rotational force to the damper 50 to be described later while operating when power is applied. Control of the rotation angle with the damper motor 40 An easy-to-use stepping motor may be used.

Since the housing 10, the fan motor 20, the blowing fan 30, and the damper motor 40 are well-known configurations in the art disclosed in the above-mentioned prior documents and are independent of the features of the present invention, more detailed The description will be omitted, and the configuration, installation structure, and operation of the damper 50 related to the features of the present invention will be described in detail below with reference to FIGS. 2 to 4 .

As illustrated in FIG. 2 , the damper 50 is installed inside the discharge port 12 and rotated by the damper motor 40 to open or close the discharge port 12 .

The damper 50 may include a damper shaft 51 , a damper plate 52 , a damper cover 53 , a sealing collar 54 , and a gap blocking blade 55 .

The damper shaft 51 may function as a rotation shaft of the damper 50 .

For this rotational operation of the damper shaft 51 , as illustrated in FIGS. 3 and 4 , a shaft groove 13 is concavely formed in the inner ceiling of the discharge port 12 , and the damper shaft 51 is connected to the damper motor 40 . ) may be installed in the shaft groove 13 while being coupled to the motor shaft.

The shaft groove 13 may be concave in an arc shape close to a semicircle, and the damper shaft 51 may rotate smoothly without interference and friction with the inner circumferential surface of the shaft groove 13 during the rotation process. 13) It can be installed to have a gap (S) of a certain space between the inner circumferential surface. That is, the inner peripheral surface of the shaft groove 13 may be relatively larger than the outer peripheral surface of the damper shaft 51 .

The damper plate 52 may be integrally connected to the damper shaft 51 to rotate according to the rotation of the damper shaft 51 .

That is, the damper plate 52 rotates upwardly toward the front of the discharge port 12 so that the discharge port 12 is opened when blowing with the damper shaft 51 as the center of rotation, and counter wind when not blowing. A downward rotation may be made toward the rear side so that the discharge port 12 is closed for blocking.

Both the damper shaft 51 and the damper plate 52 may be made of a hard material such as metal or plastic.

The damper cover 53 is a cover that is covered on the outside of the damper plate 52 so as to surround the damper plate 52 , and the sealing collar 54 and the gap blocking collar 55 are integrated with the damper cover 53 . can be formed.

The damper cover 53 and the sealing blade 54 and the gap blocking blade 55 integrally formed therewith may all be made of a soft material such as rubber, silicone, or the like.

The sealing feather 54 may be integrally formed to extend outwardly from the damper cover 53 along the left and right side ends and the lower end of the damper plate 52 , and when the discharge port 12 is closed, the inner side of the discharge port 12 . By closely adhering to the left and right side walls and the floor, airtight closure can be achieved.

The gap blocking blade 55 may be formed to protrude a predetermined length from the front top of the damper cover 53 toward the front.

As illustrated in FIG. 5, when the damper plate 52 is rotated upwardly toward the front for opening the discharge port 12, the gap breaker 55 is rotated along the gap S in conjunction with each other, as illustrated in FIG. As illustrated, when the damper plate 52 is rotated downwardly toward the rear to close the discharge port 12 , it is in close contact with the front end of the inner circumferential surface of the shaft groove 13 to block the reverse flow flowing into the gap S.

At this time, the stepped portion 14 may be formed to protrude from the front end of the inner circumferential surface of the shaft groove 13, and the gap blocking blade 55 is spaced apart from the inner circumferential surface of the shaft groove 13 when rotating along the gap S. While rotating in a non-contact state, it may be formed to selectively contact and closely contact the stepped portion 14 only at the front end of the inner peripheral surface of the shaft groove 13 .

That is, the gap blocking blade 55 is located inside the shaft groove 13 instead of outside the shaft groove 13 , and when the damper 50 is rotated to open or close the discharge port 12 , the space inside the shaft groove 13 . That is, rotation is made along the gap (S) without interference with the inner circumferential surface of the shaft groove 13, and when the damper 50 closes the discharge port 12, it is located at the front end of the inner circumferential surface of the shaft groove 13 and the stepped portion 14. adhesion is made to

Here, for a more airtight close contact between the gap blocking collar 55 and the stepped portion 14, the stepped portion 14 may have an inclined surface, and the end of the gap blocking collar 55 is the stepped portion 14. ) may be formed in a bent form to enable surface contact on the inclined surface.

Therefore, when the discharge port 12 is closed, the gap blocking blade 55 is in close contact with the stepped portion 14 of the front end of the inner circumferential surface of the shaft groove 13 to block the reverse flow flowing into the gap S, but for opening or closing In the process in which the damper plate 52 is rotated, it is spaced apart from the inner circumferential surface of the shaft groove 13 and rotates along the gap S, so that the rotation process of the damper 50 is not affected.

In addition, since it is not exposed to the outside of the shaft groove 13 and is located inside the shaft groove 13, it does not impede the air flow when blowing, and the phenomenon of causing vibration or noise as in the prior art can be minimized.

On the other hand, a gap blocking piece 15 may be formed at the rear end of the inner circumferential surface of the shaft groove 13 .

The gap blocking piece 15 may be formed to protrude a predetermined length from the rear end of the inner peripheral surface of the shaft groove 13 toward the damper shaft 52 , and contact the damper shaft 52 so as not to interfere with the rotation of the damper shaft 52 . It can only protrude only to a position close to it.

That is, the gap blocking piece 15 does not completely block the gap S, but minimizes the entrance of the gap S.

The gap blocking piece 15 does not cause any interference in the rotation of the damper 50, and the damper 50 is rotated upwardly forward so that the air into the shaft groove 13 is blown when the outlet 12 is opened. inflows can be minimized.

Looking briefly at the operation of the damper 50 installed in the above configuration, first, when the blowing fan 30 is operated, the damper 50 is moved to the front of the discharge port 12 according to the operation of the damper motor 40 . The discharge port 12 is opened while rotating upward.

At this time, as illustrated in FIG. 5, in the process of upward rotation of the damper 50, the gap blocking blade 55 rotates along the gap S without interference or friction with the inner peripheral surface of the shaft groove 13, so the damper ( 50) enables smooth rotation.

And, since the gap blocking blade 55 is located inside the shaft groove 13 and is not exposed to the outside, it does not cause friction with the blown air, and thus the vibration of the damper 50 without impeding the flow of the blown air at all. Phenomenon or noise can be minimized.

On the other hand, when the blowing fan 30 is stopped and non-blowing, the damper 50 is rotated downwardly toward the rear to close the discharge port 12 according to the operation of the damper motor 40 again.

At this time, even in the process of downward rotation of the damper 50, the gap blocking blade 55 of the damper 50 rotates along the gap S without interference or friction with the inner peripheral surface of the shaft groove 13, so the damper for closing ( 50) is also smoothly performed.

And, when the damper 50 reaches the closed position according to the rotation, as illustrated in FIG. 4 , the gap blocking blade 55 is in close contact with the stepped portion 14 formed at the front end of the inner circumferential surface of the shaft groove 13 .

Accordingly, the discharge port 12 is hermetically closed through the closing collar 54 of the damper 50 and the gap S of the shaft groove 13 is also blocked, thereby completely blocking the reverse flow flowing into the discharge port 12 . will become

As described above, the blower according to the present invention can maximize the reverse flow blocking efficiency by blocking even the gap between the shaft groove and the damper shaft. It can be seen that the vibration of the damper or the generation of noise can be minimized without disturbing the air flow during ventilation.

The preferred embodiment of the present invention has been described in detail above, but the technical scope of the present invention is not limited to the contents described in the above-described embodiments and drawings, and may be modified or modified by those skilled in the art. It will be said that the modified equivalent configuration does not depart from the scope of the technical spirit of the present invention.

The reference numerals for the main parts of the accompanying drawings are as follows.
10: housing 12: outlet
13: shaft groove 14: stepped portion
15: gap sealing piece 20: fan motor
30: blow fan 40: damper motor
50: damper 51: damper shaft
53: damper cover 55: gap blocking collar

Claims (3)

A housing 10 having an inlet 11 and an outlet 12 formed therein, a blower fan 30 installed inside the housing 10 and rotated by a fan motor 20 , and installed in the outlet 12 In the damper-integrated blower comprising a damper 50 that opens and closes the discharge port 12 while being rotated by the damper motor 40,
The damper 50 is
A damper shaft 51 installed with a gap S inside the shaft groove 13 concave in the ceiling of the outlet 12, and a rigid damper plate 52 connected to the damper shaft 51 and rotating; a soft damper cover 53 coated on the damper plate 52, and a soft gap blocking collar 55 protruding from the upper front surface of the damper cover 53;
A stepped portion 14 is formed protruding from the front end of the inner circumferential surface of the shaft groove 13,
When the damper 50 is rotated, the gap blocking blade 55 is rotated in association with the inner circumferential surface of the shaft groove 13 and rotated along the gap S in a non-contact state, and the discharge port by the damper 50 ( 12) A damper-integrated blower that selectively adheres to the stepped portion 14 only when closing, thereby blocking the reverse flow flowing into the gap (S). delete The method of claim 1,
A damper-integrated blower in which a gap blocking piece (15) protruding to be close to the damper shaft (51) is formed at the rear end of the inner peripheral surface of the shaft groove (13).

Images